Lighting device



FIG. 1 is a perspective view of the design.

FIG. 2 is a right side view of the design.

FIG. 3 is a top view of the design.

FIG. 4 is a bottom view of the design.

FIG. 5 is a front view of the design; and,

FIG. 6 is a rear view of the design.

Any broken line(s) shown are for illustrative purposes only and form nopart of the claimed design.

We claim the ornamental design for a lighting device, as shown and described. 